The Smok kit RPM40 Pod Coils, 7 types of replacement coils available, allow Direct Lung or Mouth to Lung vaping.
the newly designed 0.4ohm Smok RPM Mesh Coils designed for the best flavor and excellent vapor production,
Smok RPM 0.3ohm, 0.4ohm, 0.8ohm and 0.6ohm Coils for the 0mg Freebase or Low-Level Nicotine Juice,
the 1.0ohm and 1.2ohm Coils optimized for nicotine salts. the RPM RBA Core, which designed by Smok engineers to help you find your individual vaping style. the screwdriver included making it easy and convenient to rebuild the Coil.
There are five different coil variants in the RPM40 series. These include:

The 0.4ohm mesh has a faster heating process which increases e-liquid flavour. This coil is best rated at 25Ws.

The 0.6ohm triple mesh has a faster ramp-up time that increases flavour and vapour production. This coil is best rated at 25Ws.

The 1.2ohm Quartz has a fast heating process which gives a purer flavour with every inhale. This coil is best rated at 12Ws.

The 1.0ohm single coil offers intense flavour and dense vapour production when used at 14Ws.

The RBA is a DIY version of the coil that produces massive vapour and flavour production. This RBA supports a minimum resistance of 0.25ohm.